Back to basics!
It's great to hear you going back to your roots doing video game remixes, not that your other stuff wasn't great. I've always loved the Super Mario World theme due to the fact that it's my favorite video game (it says so on my profile). I also really appreciated how you gave Psy credit for his two second cameo. This works well in being nostalgic as I used to play this with my brother all the time. You got all of the notes just right and as good as any Mario thing. I think you may be the first person who actually sung your song without lyrics instead of using instruments.